All brain tissue samples from no less than ten percent (10%) of all domestic cervidae sixteen (16) months of age or older that die or are harvested on domestic cervidae farms or ranches shall be submitted by the owner or operator of the domestic cervidae farm or ranch to official laboratories to be tested or examined for chronic wasting disease (CWD). Reindeer and fallow deer are exempt from this testing requirement unless the reindeer or fallow deer are part of a CWD positive, exposed, trace, source or suspect herd. One hundred percent (100%) of brain tissue samples may still be submitted by the owner or operator to maintain export status in accordance with the national CWD herd certification program.